Sounds dodgy, TVs have high internal voltages and capacitors, bathrooms have high levels of moisture, the only switch allowed in a bathroom is a pull switch, razor sockets have to have a double wound transformer etc. If you could make a screen visible but have all the switches and controls outside you could do it. Perhaps take some of a wall out and put a glass screen in with the TV behind it. Or carry in a small battery powered one.
I worked as an electrician for years and I wouldn't touch this.
In a bathroom you have a better path to Earth through the pipes and water and I think it's just too dangerous.